DOWNLOAD Sony KLV-40W300A / KLV-46W300A (serv.man2) Service Manual ↓ Size: 14.27 MB | Pages: 82 in PDF or view online for FREE

– 2 –

Specifications ............................................................................. 3
PC Input Signal Reference Chart ......................................... 4
Warning and Cautions ............................................................. 5
Safety Check Out ....................................................................... 5
Safety-Related Component Warning ................................... 5
Caution

...................................................................................... 6

Self Diagnostic Function ........................................................ 7

KLV-40W300A
1-1-1.

Rear Cover Assy Removal ............................ 9

1-1-2.

Stand Assy and ARM Assy Removal ............ 9

1-1-3.

Multi Button Assy And
HW1 Board Removal .................................. 10

1-1-4.

HW2 Board Removal .................................. 10

1-1-5.

DF1 Board and GF1 Board Removal ......... 11

1-1-6.

FB Top Shield Assy Removal ..................... 11

1-1-7.

AG Board and FB2 Board Removal ........... 12

1-1-8.

TUG Board Removal .................................. 12

1-1-9.

AC Inlet, Chassis Bracket and
Stay Removal ............................................... 13

1-1-10. Loud Speaker Removal ............................... 13
1-1-11. LCD Panel, HW3 Board and

Bezel Assy Removal .................................... 14

KLV-46W300A
1-2-1.

Rear Cover Assy Removal .......................... 15

1-2-2.

Stand Assy and ARM Assy Removal .......... 15

1-2-3.

Multi Button Assy And
HW1 Board Removal .................................. 16

1-2-4.

HW2 Board Removal .................................. 16

1-2-5.

DF2, DF3 and GF1 Boards Removal .......... 17

1-2-6.

FB Top Shield Assy Removal ..................... 17

1-2-7.

AG and FB2 Boards Removal ..................... 18

1-2-8.

TUG Board Removal .................................. 18

1-2-9.

AC Inlet, Chassis Bracket and
Stay Removal ............................................... 19

1-2-10. Loud Speaker Removal ............................... 19
1-2-11. LCD Panel, HW3 Board and

Bezel Assy Removal .................................... 20

2-1.

How to enter Service Mode ....................................... 22

2-2.

Change Data by Service Mode .................................. 22

2-3.

Software Version Check ............................................ 24

2-4.

Set to Shipping Condition ......................................... 25

3-1.

No Power (Flow Chart_B) ......................................... 26

3-2.

Set Reboots ................................................................ 27

3-3.

Self Diagnosis ............................................................ 27

3-4.

Communication Error ................................................ 29

3-5.

Audio Problem (Flow Chart_D) ................................ 29

3-6.

Video Problem (Flow Chart_E) ................................. 30

4-1.

Circuit Boards Location ............................................ 31

4-2.

Schematic Diagram Information ............................... 31
4-2-1. AG Board — (001) ....................................... 32
4-2-2. AG Board — (002) ....................................... 34
4-2-3. AG Board — (003) ....................................... 36
4-2-4. AG Board — (004) ....................................... 38
4-2-5. AG Board — (005) ....................................... 40
4-2-6. AG Board — (006) ....................................... 42
4-2-7. AG Board — (007) ....................................... 44
4-2-8. AG Board — (008) ....................................... 46
4-2-9. GF1, FB2, DF1, DF2 & DF3 Boards

Schematic Diagram ...................................... 47

4-2-10. HW1 Board Schematic Diagram .................. 48
4-2-11. HW2 Board — (001) .................................... 49
4-2-12. HW2 Board — (002) .................................... 51
4-2-13. HW2 Board — (003) .................................... 53
4-2-14. HW3 Board Schematic Diagram .................. 55
4-2-15. TUG Board Schematic Diagram .................. 57

4-3.

Printed Wiring Boards ............................................... 59

4-4.

Semiconductors .......................................................... 64

5-1.

KLV-40W300A .......................................................... 66

5-2.

KLV-46W300A .......................................................... 73

5-3.

Packing Materials ...................................................... 79

6. ELECTRICAL PARTS LIST .............................................. 80

! ON THE

– 3 –

*  Specified standby power is reached after the TV finishes nessary internal processes.

Design and specifications are subject to change without notice.

Panel System

LCD (Liquid Crystal Display) Panel

TV System

B/G, I, D/K, M

Colour System

PAL, SECAM, NTSC 3.58, NTSC 4.43 (only Video In)

Channel Coverage

B/G: VHF: E2 to E12/ UHF: E21 to E69/ CATV: S01 to S03, S1 to S41

VHF: 1 to 11/ UHF: 21 to 69/ CATV: S01 to S03, S1 to S41 (New Zealand only)

I:

UHF: B21 to B69/ CATV: S01 to S03, S1 to S41

D/K: VHF: C1 to C12, R1 to R12/ UHF: C13 to C57, R21 to R60/ CATV: S01 to S03, S1 to S41, Z1 to

Z39

M:

VHF: A2 to A13/ UHF: A14 to A79/ CATV: A-8 to A-2, A to W+4, W+6 to W+84

Sound Output

11 W + 11 W

Antenna

75 ohm external terminal for VHF/UHF

1, 2

S video input (4-pin mini DIN)

1, 2, 3

Video input (phono jack)

1, 2, 3

Audio input (phono jacks): 500 mVrms, Impedance: 47 kilohms

1/

2

Supported formats: 1080p, 1080i, 720p, 576p, 576i, 480p, 480i
Y: 1 Vp-p, 75 ohms, 0.3V negative sync/P

B

/C

B

: 0.7 Vp-p, 75 ohms/

P

R

/C

R

: 0.7 Vp-p, 75 ohms

HDMI IN 1, 2, 3

Video: 1080/24p, 1080p, 1080i, 720p, 576p, 576i, 480p, 480i
Audio: Two channel linear PCM
32, 44.1 and 48 kHz, 16, 20 and 24 bits
Analogue audio input (phono jacks): 500 mVrms, Impedance: 47 kilohms (HDMI IN 1 only)

Audio output (phono jacks)

PC IN

(RGB)

PC Input (D-sub 15-pin)
G: 0.7 Vp-p, 75 ohms, non Sync on Green/B: 0.7 Vp-p, 75 ohms/
R: 0.7 Vp-p, 75 ohms/HD: 1-5 Vp-p/VD: 1-5 Vp-p

PC audio input (minijack)

Headphones jack

Power Requirements

110–240 V AC, 50/60 Hz

Screen Size

40 inches (Approx. 101.6 cm
measured diagonally)

46 inches (Approx. 116.8 cm
measured diagonally)

Display Resolution

1,920 dots (horizontal) 

×

 1,080 lines (vertical)

Power Consumption

230 W

270 W

Standby Power Consumption*

0.3 W

Dimensions
(w 

× h × d)

(with stand)

Approx. 992 

×

 688 

×

 265 mm

Approx. 1,135 

×

 779 

×

 306 mm

(without stand)

Approx. 992 

×

 643 

×

 122 mm

Approx. 1,135 

×

 734 

×

 122 mm

Mass

Approx. 25.5 kg

Approx. 32.5 kg

Approx. 22.0 kg

Approx. 28.5 kg

Optional Accessories

Wall-Mount Bracket SU-WL500

TV Stand SU-FL300M

(with stand)

(without stand)

– 4 –

• This TV’s PC input does not support Sync on Green or Composite Sync.
• This TV’s PC input does not support interlaced signals.
• For the best picture quality, it is recommended to use the signals (boldfaced) in the above chart with a 60 Hz vertical frequency

from a personal computer. In plug and play, signals with a 60 Hz vertical frequency will be selected automatically.

VGA

640

480

37.5

75

VESA

720

400

31.5

70

VGA-T

SVGA

800

600

46.9

75

VESA

XGA

1024

768

56.5

70

VESA

1024

768

60.0

75

VESA

WXGA

1280

768

60.3

75

SXGA

1280

1024

80.0

75

VESA

HDTV

– 5 –

!

These servicing instructions are for use by qualified service
personnel only.
To reduce the risk of electric shock, do not perform any servicing
other than that contained in the operating instructions unless you
are qualified to do so.

An isolation transformer should be used during any service to
avoid possible shock hazard, because of live chassis.
The chassis of this receiver is directly connected to the ac power
line.

When installing the LCD panel, be sure you are grounded by using a
wrist band.
When installing the LCD panel on the wall, the LCD panel must be
secured  using the 4 mounting holes on the rear cover.

1). do not press on the panel or frame edge to avoid the risk of electric
shock.
2). do not scratch or press on the panel with any sharp objects.
3). do not leave the module in high temperatures or in areas of high
humidity for an extended period of time.
4). do not expose the LCD panel to direct sunlight.
5). avoid contact with water. It may cause a short circuit within the
module.
6). disconnect the AC adapter when replacing the backlight (CCFL)
or inverter circuit.
(High voltage occurs at the inverter circuit at 650Vrms)
7). always clean the LCD panel with a soft cloth material.
8). use cere when handling the wires or connectors of the inverter
circuit. Damaging the wires may cause a short.
9). protect the panel from ESD to avoid damaging the electronic circuit
(C-MOS).

After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered

connections. Check the entire board surface for solder splashes
and bridges.

2. Check the interboard wiring to ensure that no wires are

“pinched” or contact high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps, and

mounting hardware have been replaced. Be absolutely certain
that you have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly

transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.

5. Look for parts which, though functioning, show obvious signs of

deterioration. Point them out to the customer and recommend
their replacement.

6.  Check the line cords for cracks and abrasion. Recommend the

replacement of any such line cord to the customer.

7. Check the antenna terminals, metal trim, “metallized” knobs,

screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.

LEAKAGE  TEST
The AC leakage from any exposed metal part to earth ground and from
all exposed metal parts to any exposed metal part having a return to
chassis, must not exceed 0.5 mA (500 microamperes). Leakage current
can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers’ instructions to use these
instructions.

2. A battery-operated AC milliampmeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM

or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low voltage scale. The
Simpson’s 250 and Sanwa SH-63TRD are examples of passive
VOMs that are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable (see Figure A).

Fig. A. Using an AC voltmeter to check AC leakage.

1.5 k Ω

0.15 µF

It is essential that all critical parts be replaced only with the part
number specified in the electrical parts list to prevent electric
shock, fire, or other hazard.
NOTE: Do not modify the original design without obtaining written

permission from the manufacturer or you will void the original
parts and labor guarantee.